From d6c5a30cfdf658280338dbb8c8b17fab3190b928 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 7 Dec 2021 19:33:03 +0900
Subject: ObjectSpace::WeakMap#inspect: check if living object [Bug #18392]

---
 test/ruby/test_weakmap.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'test/ruby/test_weakmap.rb')

diff --git a/test/ruby/test_weakmap.rb b/test/ruby/test_weakmap.rb
index 3b9eef770a..46d8b50c03 100644
--- a/test/ruby/test_weakmap.rb
+++ b/test/ruby/test_weakmap.rb
@@ -73,6 +73,15 @@ class TestWeakMap < Test::Unit::TestCase
                  @wm.inspect)
   end
 
+  def test_inspect_garbage
+    1000.times do |i|
+      @wm[i] = Object.new
+      @wm.inspect
+    end
+    assert_match(/\A\#<#{@wm.class.name}:[^:]++:(?:\s\d+\s=>\s\#<(?:Object|collected):[^:<>]*+>(?:,|>\z))+/,
+                 @wm.inspect)
+  end
+
   def test_each
     m = __callee__[/test_(.*)/, 1]
     x1 = Object.new
-- 
cgit v1.2.3